Errors in transit do play a big role in the entire pool. I recently tried to sign up two servers to the pool and the monitor was not able to reach them after a few tries I gave up. How many potential servers do never reach the pool because the monitor doesn’t see them and the potential new user gives up before ever being able to provide their server? What is now active in the pool are only those servers who have a reasonable error free network path to the monitor server. That list is biased.